[QUOTE="Colin"] Yes, I can see that - it's why they're fitted OEM by reputable manufacturers. However, there are plenty of circumstances, such as a bumpy road, brow of a hill or a heavy load in the boot, in which an oncoming car ends up below the cut-off and in the glare of that "much more light". The best you can say is that on-coming cars will be affected less often by cars with HID lights, but more severely when they are.[/QUOTE] I can't believe you are arguing for a return to the Prince of Darkness. I drove 25k last year and was never once blinded. HID's are utterly feckin ace and if WUN upgrades I bet he gets them OEM.